ok...well the h2o girls are cleo sertori,rikki chadwick,emma gilbert,kim sertori,and charlotte. charlotte comes in the 2nd season but oh well!cleo and kim are sisters as you can tell,rikki is the poorish one on the show =( emmas boyfriend in season1 was byron and in season2 it was ash, rikkis boyfriend is the rich zane aka (the badboy)and cleo and charlotte both dated lewis but lewis dumps charlotte and get bakc together with cleo in the ending of the 2nd season,oh! and charlotte becomes a mermaid because she thought that if her grandma was one than she should be on too!then she gets this weird idea that she is sooooooo better than emma,cleo,and rikki!and well kim is just a brat! =)ok... well thats it! =)